104Rf
Element 104
Rutherfordium
Transition metals
Rutherfordium is a chemical element with symbol Rf and atomic number 104, named in honor of physicist Ernest Rutherford.
Key data
- Atomic number
- 104
- Atomic mass
- 267.000 u
- Group / Period
- 4 / 7
- Block
- d-block
- Phase at STP
- Solid
- Density
- 23.2 g/cm³
- Melting point
- 2126.8 °C
- Boiling point
- 5526.9 °C
- Electron configuration
- [Rn] 5f14 6d2 7s2
Common uses
- •Research only
- •First transactinide
- •Few atoms ever made
Discovery
Year: 1964
Discovered by: Joint Institute for Nuclear Research
Frequently asked questions
What is the atomic number of Rutherfordium?
Rutherfordium has atomic number 104. Its symbol is Rf and its atomic mass is 267 u.
What category of element is Rutherfordium?
Rutherfordium is classified as transition metals. It sits in group 4, period 7 of the periodic table.
What is Rutherfordium used for?
Common uses of Rutherfordium include: Research only, First transactinide, Few atoms ever made.
When was Rutherfordium discovered?
Rutherfordium was discovered in 1964 by Joint Institute for Nuclear Research.
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